North America Native Plant

Santa Lucia Phacelia

Botanical name: Phacelia grisea

USDA symbol: PHGR3

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Santa Lucia Phacelia: A Rare California Native Worth Knowing Meet the Santa Lucia phacelia (Phacelia grisea), a charming little annual wildflower that calls the beautiful Santa Lucia Mountains of California home. While this native gem might not be on every gardener’s radar, it’s definitely worth getting to know – especially ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Santa Lucia Phacelia: A Rare California Native Worth Knowing

Meet the Santa Lucia phacelia (Phacelia grisea), a charming little annual wildflower that calls the beautiful Santa Lucia Mountains of California home. While this native gem might not be on every gardener’s radar, it’s definitely worth getting to know – especially if you’re passionate about supporting California’s unique flora.

What Makes Santa Lucia Phacelia Special?

This delicate forb – that’s garden-speak for a soft-stemmed, non-woody plant – belongs to California’s rich tapestry of native wildflowers. As an annual, it completes its entire life cycle in just one growing season, making it a perfect addition to wildflower mixes and naturalized garden areas.

Santa Lucia phacelia is native exclusively to California, where it has adapted to the state’s unique Mediterranean climate. This makes it particularly well-suited for California gardens and landscapes that aim to showcase the region’s natural beauty.

A Word About Rarity

Here’s something important to keep in mind: Santa Lucia phacelia has a conservation status that’s currently undefined, which suggests it may be uncommon in the wild. If you’re interested in growing this native beauty, it’s crucial to source seeds or plants only from reputable native plant nurseries that practice ethical collection methods. Never collect seeds from wild populations.

Garden Appeal and Uses

While detailed information about this specific species is limited, phacelias as a group are beloved by gardeners for several reasons:

  • They’re excellent pollinator magnets, attracting bees and other beneficial insects
  • Their delicate flowers add texture and movement to garden beds
  • As natives, they’re perfectly adapted to local growing conditions
  • They work beautifully in wildflower gardens and naturalized landscapes

Growing Conditions and Care

Since Santa Lucia phacelia is a California native, it likely thrives in conditions similar to other plants from the region:

  • Full sun to partial shade
  • Well-draining soil (California natives typically don’t like wet feet)
  • Minimal summer water once established
  • USDA hardiness zones 8-10, typical for coastal and inland California

As an annual, you’ll need to replant each year or allow the plant to self-seed naturally in your garden.

Perfect Garden Companions

Santa Lucia phacelia would feel right at home alongside other California natives like:

  • California poppies
  • Lupines
  • Native grasses
  • Other regional wildflowers

The Bottom Line

While Santa Lucia phacelia might be a bit of a mystery plant due to limited cultivation information, its status as a California native makes it worth considering for gardeners committed to supporting local ecosystems. Just remember to source responsibly and consider it a special addition to your native plant collection.

If you can’t find Santa Lucia phacelia, don’t worry! There are many other Phacelia species that offer similar benefits and are more readily available. The key is choosing plants that support your local pollinators and celebrate the natural beauty of your region.

Santa Lucia Phacelia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Hydrophyllaceae R. Br. - Waterleaf family

Genus

Phacelia Juss. - phacelia

Species

Phacelia grisea A. Gray - Santa Lucia phacelia

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA